Holder for glass cutting wheel

ABSTRACT

A glass cutting wheel holder in which the wheel supporting axle is swingably secured at one end to a spring loaded bar. Replacement of the cutting wheel is effected by pulling the bar outwardly of its supporting block, rotating the axle about the bar until the cutting wheel falls off the free end of the axle, replacing the wheel with a sharp wheel and rotating and releasing the axle to permit the cutting wheel to resume the operative position.

United States Patent Inventor Kenneth G. Galla Scotch Plains, NJ.

Appl. No. 769,979

Filed Oct. 23, 1968 Patented Mar. 16, 1971 Assignee Red Devil Inc.

Union, NJ.

HOLDER FOR GLASS CUTTING WHEEL 1 Claim, 7 Drawing Figs.

U.S. Cl

83/481, 30/164.95 Int. Cl B26d 3 /08 Field of Search 83/6, 12,

[56] References Cited UNITED STATES PATENTS 1,710,898 1929 Rowley 83/6X2,265,955 1941 Roberts et a1... 30/164.95 3,461,755 8/1969 Gerew et a183/12 Primary Examiner-Andrew R. Juhasz Assistant Examiner-James F. CoanAttorney-Albert F. Konman ABSTRACT: A glass cutting wheel holder inwhich the wheel supporting axle is swingably secured at one end to aspring loaded bar. Replacement of the cutting wheel is effected bypulling the bar outwardly of its supporting block, rotating the axleabout the bar until the cutting wheel falls off the free end of theaxle, replacing the wheel with a sharp wheel and rotating and releasingthe axle to permit the cutting wheel to resume the operative position.

BACKGROUND OF' TI-IE INVENTION Glass cutting wheels, particularly inglass cutting machines, need frequent sharpening. Presently knownholders for glass cutting wheels require a substantial amount ofdisassembly in order to replace the cutting wheels. Such disassemblyincreases the amount of labor involved and the down time of the machine.

SUMMARY OF THE INVENTION The glass cutting wheel holder, according tothe present invention, employs a block having a longitudinal off-axisbore therein. A spring loaded bar is carried within the block with oneend extending therefrom. An axle is secured at one end to the bar andextends normally therefrom across the front of the block. The cuttingwheel is carried by the axle. The block is provided with a slot toreceive the wheel and a transverse groove for the axle.

DESCRIPTION OF THE DRAWING In the accompanying drawing forming parthereof:

FIG. 1 is a somewhat isometric view of a complete embodiment of thepresent invention with certain features indicated in dashed lines.

FIG. 2 is a view in longitudinal section taken on line 2 -2 of FIG. 1.

FIG. 3 is a view in longitudinal section taken on line 3 3 in FIG. 1.

FIG. 4 is a cross-sectional view taken on line 4 4 in FIG. 3.

FIG. 5 is a top plan view, partly broken away, of the cutting wheelholder shown in FIG. 1.

FIG. 6 is a view similar to FIG. 5 showing the cutting wheel in itsfreed position.

FIG. 7 is a somewhat exploded view in front elevation of a cutting wheelholder according to the present invention.

DESCRIPTION OF THE PREFERRED EMBODIMENT Referring to the drawing andparticularly to FIG. 1, 10 indicates a holder for a glass cutting wheelhaving a wheel supporting block 11 and shank 12 extending rearwardlythereof. The shank 12 is adapted to be carried by a glass cuttingmachine and may be cylindrical o r noncircular in cross section.

The block'll is provided with a longitudinal off-axis bore 13 (bestshown in FIGS. 5 and 6). The bore 13 is reduced in diameter at the endopposite the shank l2.

A bar 14 is slideably carried within the bore 13. A stop member 15 isscrewed into the end of the bar 14 adjacent the shank 12. The stopmember is slightly smaller in diameter than the bore 13 and larger thanthe diameter of the bar 14. A coil spring 17 is carried within the bore13 around the bar 14 between the stop 15 and the step 18 in the bottomof the bore The cutter end of the bar 14 is longitudinally slit asindicated at 19 for a portion of its length, and transversely bored asshown at 20 in FIG. 2. An axle member 21 is carried at one V end withinthe transverse bore 20. The axle 21 is tightened within the bore 20 bymeans of a screw 22, which is threadably received within the bar 14,nonnal to the slit 19.

The support block 11 is provided with a longitudinal slot 23 at thefront thereof to receive the cutting wheel 24. A recess 25 in the block11 permits the head of the screw 22 to move longitudinally within theblock, and acts as a stop for the inward movement ofthe bar 14. Thefront of the block 11 is also formed with a transverse groove 26 toreceive the axle member 21.

The operation of the glass cutter wheel holder will be apparent from theforegoing description and the drawings. With the elements assembled inthe manner shown in FIG. 1, the holder may be inserted into a glasscutting machine (not shown) or the like by means of the shank 12. If itis desired to substitute a sharp wheel for the cutter wheel within theholder,

it is merely necessary to push the bar 14 forward in the manner shown inFIG. 6.. This operation may be carried out by means of a small rod 27,or by grasping the screw 22 and pulling it forward. When the screw 22clears the end of the recess 25, the bar 14 can be rotated either up ordown in the manner shown in FIGS. 1 and 7. The cutting wheel 24 can thenhe slipped off the axle 21 and replaced. With a new cutting wheel on theaxle, the axle 21 and the bar 14 are again rotated until the axle 21snaps into the groove 26 by the operation of the coil spring 17. Thecutting wheel is then ready for application to a surface 28 of theglass.

From the foregoing it will be seen that there has been provided a simplebut positive glass cutter wheel holder in which the cutting wheel can bereplaced with a minimum of effort and disassembly.

Iclaim:

l. A holder for a glass cutting wheel comprising a block, a shankcarried by the block and extending outwardly thereof, an off-axis borein said block, a recess in the top of the block communicating with thefront portion of the block and a portion of the bore and parallel withsaid bore, an elongated bar freely carried within the bore, a stopsecured at one end to the elongated bar extending outwardly of said barinto the recess to limit the inward travel of the bar, said elongatedbar having a longitudinal slit therein and being transverselybored,spring means within the bore to urge the bar in the direction of shank,an axle member secured at one end to the bar and normal theretoreceivable within the elongated bar bore, a transverse groove at theblock opposite the shank to receive the axle member, a glass cuttingwheel freely carried by the axle and a slot in the block, normal to thetransverse groove and communicating with said groove, said slot being ofthe width and depth to receive the cutting wheel therein.

1. A holder for a glass cutting wheel comprising a block, a shankcarried by the block and extending outwardly thereof, an off-axis borein said block, a recess in the top of the block communicating with thefront portion of the block and a portion of the bore and parallel withsaid bore, an elongated bar freely carried within the bore, a stopsecured at one end to the elongated bar extending outwardly of said barinto the recess to limit the inward travel of the bar, said elongatedbar having a longitudinal slit therein and being transversely bored,spring means within the bore to urge the bar in the direction of shank,an axle member secured at one end to the bar and normal theretoreceivable within the elongated bar bore, a transverse groove at theblock opposite the shank to receive the axle member, a glass cuttingwheel freely carried by the axle and a slot in the block, normal to thetransverse groove and communicating with said groove, said slot being ofthe width and depth to receive the cutting wheel therein.